Multifunctional metal detector

ABSTRACT

The present disclosure discloses a multifunctional metal detector, including a housing and a control circuit board and a wall detection circuit mounted in the housing. The multifunctional metal detector further includes at least one coupling assembly capable of being connected to the control circuit board, the coupling assembly being constructed for detachably coupling and connecting at least one functional device to the multifunctional metal detector. The coupling assembly is used to detachably couple and connect at least one functional device to different functional devices, so as to achieve the combined application of metal detection and other functions selected by a user on his/her own.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority of Chinese Patent Application No. 202221619612.5, filed on Jun. 27, 2022, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the field of multifunctional detection tools, in particular to, a multifunctional metal detector.

BACKGROUND

Metal detectors are mainly used for positioning metal objects. The existing detectors are divided into many categories, operated according to a variety of principles, and can be used in the fields of construction of buildings, interior decoration, traffic accident treatment and the like.

However, the function of the existing metal detector is relatively single. For example, in the field of construction of buildings, during the actual construction, in addition to performing metal detection, the user often needs to measure the distance and thickness, performs marking, etc. The corresponding distance measuring device, thickness measuring device, and even a laser marking device, etc., need to be prepared, so the user needs to carry a variety of equipment in different functions. Consequently, the user needs to carry more equipment, causing great inconvenience. And the operating systems of different equipment are not uniform, and the use is cumbersome and complex.

At the same time, the existing metal detectors only have the detection function and other functions can not be adapted or selected according to the user's needs, causing poor flexibility.

SUMMARY OF THE INVENTION

The present disclosure aims to solve one of the technical problems in the prior art. To this end, an object of the present disclosure is to propose a multifunctional metal detector, and the multifunctional metal detector is compact in structure and can be adapted to different functional devices to increase the use flexibility and convenience of the user and improve the user experience.

A multifunctional metal detector according to an embodiment in the first aspect of the present disclosure, including a housing and a control circuit board and a wall detection circuit mounted in the housing, includes at least one coupling assembly capable of being connected to the control circuit board, the coupling assembly being constructed for detachably coupling and connecting at least one functional device to the multifunctional metal detector, and the functional device being used for proving other functions different from metal detection.

In the multifunctional metal detector according to the embodiment of the present disclosure, by disposing the coupling assembly, the coupling assembly is used to detachably couple and connect at least one functional device to different functional devices, so as to achieve the combined application of metal detection and other functions selected by the user on his/her own, effectively reducing the number of equipment carried by the user in use, reducing the volume, and improving flexibility and convenience.

According to some examples of the present disclosure, the coupling assembly is used for fixing the functional device to the housing and/or used for information transmission between the functional device and the multifunctional metal detector.

According to some examples of the present disclosure, the coupling assembly includes a first coupling assembly, the first coupling assembly including an insert portion, the insert portion being disposed on one of the multifunctional metal detector and the functional device; and an accommodating portion, the accommodating portion being disposed on the other one of the multifunctional metal detector and the functional device and being capable of accommodating the insert portion; when the insert portion is accommodated by the accommodating portion, the insert portion and the accommodating portion being limited to each other and electrically connected so that the functional device is connected to the multifunctional metal detector.

According to some examples of the present disclosure, the housing includes an intermediate frame, and the coupling assembly is disposed on the intermediate frame.

According to some examples of the present disclosure, the multifunctional metal detector further includes a laser distance measuring device integrated in the housing and connected to the control circuit board, the laser distance measuring device being located on the short edge side of the intermediate frame, and the intermediate frame being provided with a transmitting channel and a receiving channel for a light source of the laser distance measuring device to pass through at corresponding positions.

According to some examples of the present disclosure, the multifunctional metal detector further includes a laser projection device integrated in the housing and connected to the control circuit board, the laser projection device and the laser distance measuring device being arranged side by side in the width direction of the intermediate frame or in the thickness direction of the intermediate frame, and the intermediate frame being provided with a marking channel for a light source of the laser projection device to pass through at a corresponding position.

According to some examples of the present disclosure, the multifunctional metal detector further includes a lighting device integrated in the housing and connected to the control circuit board, the lighting device and the laser distance measuring device being disposed on the same side of the intermediate frame, and the intermediate frame being provided with a lighting channel for a light source of the lighting device to pass through at a corresponding position.

According to some examples of the present disclosure, the multifunctional metal detector further includes a test pencil integrated in the housing and connected to the control circuit board, the intermediate frame being provided with a first through hole at the side corresponding to the test pencil, and the test pencil being slidably disposed in the housing between an extension position for extending out of the first through hole and a hidden position for retracting into the first through hole.

According to some examples of the present disclosure, the test pencil is provided with a toggle switch, and at least a part of the toggle switch projects out of the surface of the housing so that the test pencil extends or retracts into the housing under the action of the toggle switch.

According to some other examples of the present disclosure, the coupling assembly includes a second coupling assembly, the functional device is constructed to be movably switched between a first position, a second position and a third position under the action of the second coupling assembly, and when the functional device is located at the first position, the functional device is integrally placed inside the housing; when the functional device is located at the second position, the functional device is integrally placed outside the housing; when the functional device is located at the third position, the functional device is placed inversely in the housing and at least a part of the functional device extends out of the housing.

According to some examples of the present disclosure, the functional device includes a first end side and a second end side, the first end side is provided with a conductive terminal, the second end side is provided with an elastic conductive member protruding out of the second end side, the first end side is arranged opposite to the second end side and the conductive terminal is electrically connected to the elastic conductive member; when the functional device is located at the first position, the conductive terminal on the first end side is located on the outer side of the housing; when the functional device is located at the third position, the elastic conductive member on the second end side is located on the outer side of the housing.

According to some examples of the present disclosure, the second coupling assembly includes: a support, the support being disposed on the housing, the support defining a hidden groove, where the functional device is disposed in the hidden groove at the first position and the third position; and a control mechanism, the control mechanism being connected to the functional device to lock the functional device in the hidden groove at the first position and the third position, and to unlock the functional device at the second position.

According to some examples of the present disclosure, the second coupling assembly further includes a coupling interface formed in the control circuit board, and the coupling interface is connected to the conductive terminal when the functional device is located at the third position.

According to some examples of the present disclosure, the support has a second through hole, the functional device has a first clamping groove and a second clamping groove capable of being opposite to the position of the second through hole, the first clamping groove and the second clamping groove are oppositely disposed on two opposite sides of the functional device, and the control mechanism includes: a lever, the lever being hinged to the support, one end of the lever forming a key portion and the other end of the lever forming a clamping block corresponding to the second through hole in position and shape; and an elastic member, the elastic member being disposed between a push-button switch and a bracket so as to move the lever between a locked position for locking the functional device and an unlocked position for unlocking the functional device, wherein the elastic conductive member forms a telescopic conductive post; when the lever is located at the locked position, the lever enables the clamping block to pass through the second through hole under the action of the elastic member to normally stop against the first clamping groove or the second clamping groove; when the lever is located at the unlocked position, the functional device is pushed out of the hidden groove under the action of the telescopic conductive post.

According to some examples of the present disclosure, the functional device is at least one of an ambient temperature detection device, an ambient humidity detection device, a tape measure device, a lighting device, a thermal imaging device, a laser distance measuring device, a laser marking device, an endoscope device, a thickness measuring device, a moisture content detection device, a gas detection device, a roller distance measuring device or a brake fluid water content detection device.

According to some examples of the present disclosure, the wall detection circuit includes: at least one transmitting coil; and at least one receiving coil system, the receiving coil system being inductively coupled to the transmitting coil, the receiving coil system including at least one first receiving coil and at least one second receiving coil located in the same plane of the control circuit board, where the transmitting coil forms a projection in the plane, the first receiving coil contains the projection in a region formed by the plane, the second receiving coil is arranged in an open shape in the region formed by the plane around the projection, and the first receiving coil and the second receiving coil are wound and arranged in the same direction and electrically connected to each other.

A multifunctional metal detector according to an embodiment in the second aspect of the present disclosure, including a housing and a control circuit board and a wall detection circuit mounted in the housing, includes at least one first coupling assembly capable of being connected to the control circuit board, the first coupling assembly being constructed for detachably coupling and connecting at least one functional device to the multifunctional metal detector; and at least one second coupling assembly capable of being connected to the control circuit board, the second coupling assembly being disposed in the housing, at least another functional device being constructed to be movably switched between a first position, a second position and a third position under the action of the second coupling assembly, and when the functional device is located at the first position, the functional device being integrally placed inside the housing; when the functional device is located at the second position, the functional device being integrally placed outside the housing; when the functional device is located at the third position, the functional device being placed reversely in the housing and at least a part of the functional device extending out of the housing, where the functional device is used for providing other functions different from metal detection.

In the multifunctional metal detector according to the embodiment of the present disclosure, by disposing at least one first coupling assembly and at least one second coupling assembly, the first coupling assembly and the second coupling assembly are used so that different functional devices can be respectively connected, which is convenient for users to select and match the functions according to the actual needs, improves flexibility and convenience, and reduces the overall volume; further through the second coupling assembly, in addition to coupling the functional device, it is also convenient to store and carry the functional device cooperating with it, reducing the risk that the functional device is lost, etc. in the working environment.

According to some examples of the present disclosure, the first coupling assembly includes: an insert portion, the insert portion being disposed on one of the multifunctional metal detector and the functional device; and an accommodating portion, the accommodating portion being disposed on the other one of the multifunctional metal detector and the functional device and being capable of accommodating the insert portion; when the insert portion is accommodated by the accommodating portion, the insert portion and the accommodating portion being limited to each other and electrically connected so that the functional device is connected to the multifunctional metal detector.

According to some examples of the present disclosure, the second coupling assembly includes: a support, the support being disposed on the housing, the support defining a hidden groove, where the functional device is disposed in the hidden groove at the first position and the third position; and a control mechanism, the control mechanism being connected to the functional device to lock the functional device in the hidden groove at the first position and the third position, and to unlock the functional device at the second position.

According to some examples of the present disclosure, the support has a second through hole, the functional device has a first clamping groove and a second clamping groove capable of being opposite to the position of the second through hole, the first clamping groove and the second clamping groove are oppositely disposed on two opposite sides of the functional device, and the control mechanism includes: a lever, the lever being hinged to the support, one end of the lever forming a key portion and the other end of the lever forming a clamping block corresponding to the second through hole in position and shape; and an elastic member, the elastic member being disposed between a push-button switch and a bracket so as to move the lever between a locked position for locking the functional device and an unlocked position for unlocking the functional device; when the lever is located at the locked position, the lever enables the clamping block to pass through the second through hole under the action of the elastic member to normally stop against the first clamping groove or the second clamping groove; when the lever is located at the unlocked position, the functional device is pushed out of the hidden groove under the action of the telescopic conductive post.

The additional aspects and advantages of the present disclosure will be set forth in part in the description below, parts of which will become apparent from the description below, or will be understood from the practice of the present disclosure.

DESCRIPTION OF THE DRAWINGS

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and easily understood from the description of embodiments in conjunction with the accompanying drawings below, where:

FIG. 1 is an exploded view of a multifunctional metal detector according to an embodiment of the present disclosure;

FIG. 2 is a three-dimensional view of the multifunctional metal detector according to the embodiment of the present disclosure;

FIG. 3 is a schematic view of an internal structure of the multifunctional metal detector according to the embodiment of the present disclosure;

FIG. 4 is a schematic view of a second coupling assembly of the multifunctional metal detector according to the embodiment of the present disclosure;

FIG. 5 is a schematic view of a wall detection circuit of the multifunctional metal detector according to the embodiment of the present disclosure; and

FIG. 6 is a schematic view of a multifunctional metal detector in the prior art.

LIST OF REFERENCE NUMERALS

-   -   1: housing; 2: control circuit board; 3: lighting device; 4:         wall detection circuit; 5: thermal imaging device; 6: laser         distance measuring device; 7: laser projection device; 8:         humidity measuring device; 9: test pencil; 11: upper housing;         12: intermediate frame; 13: lower housing; 14: connection         support; 15: hidden groove; 16: display screen; 17: outer         screen; 18: nut; 19: spring groove; 21: control button; 31:         lighting channel; 51: thermal imaging camera; 52: visible light         camera; 61: transmitting channel; 62: receiving channel; 71:         marking channel; 72: fixed base; 81: push-button switch (lever);         82: telescopic copper needle; 83: sliding block; 84: spring; 85:         key portion; 86: clamping block; 87: clamping groove; 871: first         clamping groove; 872: second clamping groove; 88: support; 91:         toggle switch; 92: alarming lamp; 121: display screen mounting         base; 122: key portion; 131: transmitting coil; 132: first         receiving coil; 133: second receiving coil.

DETAILED DESCRIPTION

Embodiments of the present disclosure will be described in detail below, and examples of the embodiments are illustrated in the accompanying drawings, where same or similar reference numerals refer to the same or similar elements or elements with the same or similar function throughout the description. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure and are not to be construed as limiting the present disclosure.

Metal detectors in the related arts are mainly used for positioning metal objects, and can be used in the fields of construction of buildings, interior decoration, traffic accident treatment and the like. However, during the actual construction, in addition to performing metal detection, the user often needs to measure the distance and thickness, performs marking, etc., so the user needs to carry lots of detection instruments and needs to keep changing the various detection tools when different parameters will be detected, and the use is quite cumbersome and inconvenient.

Although additional functions are integrated in the existing metal detector, tools achieving the additional functions are usually fixed to the housing directly. For example, a distance measuring module is integrated in the existing metal detector as shown in FIG. 6 , the user, in use, can not select different functional devices based on the detection parameters and the actual needs of the object. In the need for metal detection and marking, then the distance measuring module in the metal detector where the distance measuring module is integrated is not used, causing waste. It still needs to carry a laser marker, causing poor flexibility and convenience, low construction efficiency, and poor user experience.

A multifunctional metal detector according to an embodiment in the first aspect of the present disclosure will be described below with reference to FIG. 1 to FIG. 5 , including a housing 1 and a control circuit board 2 and a wall detection circuit 4 mounted in the housing 1.

At least one coupling assembly capable of being connected to the control circuit board 2 is included, the coupling assembly is constructed to be able to detachably couple and connect at least one functional device to the multifunctional metal detector, and the functional device is used for proving other functions different from metal detection.

It is to be noted that: coupling connection refers to at least one of physical connection (such as fixed, fastened, limiting, etc.), electrical connection and information transmission of the functional devices and the multifunctional metal detector.

Thus, in the multifunctional metal detector according to the embodiment of the present disclosure, by disposing the coupling assembly, the coupling assembly is used to detachably couple and connect at least one functional device to different functional devices, so that the user can select corresponding functional devices according to actual needs to achieve the combined application of metal detection and other functions selected by the user on his/her own, effectively reducing the number of equipment carried by the user in use, reducing the volume, and improving flexibility and convenience.

As in FIG. 3 , in some embodiment of the present disclosure, the coupling assembly includes a first coupling assembly, the first coupling assembly includes an insert portion and an accommodating portion, the insert portion is disposed on one of the multifunctional metal detector and the functional device, and the accommodating portion is disposed on the other one of the multifunctional metal detector and the functional device and is capable of accommodating the insert portion. For example, the insertion portion is disposed on the housing of the functional device and is formed as a convex portion protruding out of the housing of the functional device, and the accommodating portion is disposed on the multifunctional metal detector and is formed as a concave portion recessed into the housing, or, the accommodating portion and the insertion portion are each formed as a magnetic member to further enhance the reliability of connection by magnetic attraction of each other. When the insert portion is accommodated by the accommodating portion, the insert portion and the accommodating portion are limited and electrically connected so that the functional device and the multifunctional metal detector can be in fast plugging and unplugging connection.

As in FIG. 2 and FIG. 3 , in some embodiments, in order to make full use of the mounting space of the multifunctional metal detector and conveniently operate the functional device, the housing includes an intermediate frame 12, and the coupling assembly is disposed on the short edge side of the intermediate frame 12.

It is to be noted that: the intermediate frame 12 can be a component independent of an upper housing 11 and a lower housing 13, or can be a monolithic structure formed integrally with the upper housing 11 or the lower housing 13.

As in FIG. 1 , in some embodiments, the multifunctional metal detector further includes a laser distance measuring device 6 integrated in the housing and connected to the control circuit board 2, in order to avoid interference between the laser distance measuring device 6 and the functional device selected to be mounted by the user, the laser distance measuring device 6 is disposed on the short edge side of the intermediate frame 12, for example, it can be located on the top side of the intermediate frame 12, and can also be located on the bottom side of the intermediate frame 12. The intermediate frame 12 is provided with a transmitting channel 61 and a receiving channel 62 corresponding to the position where the laser distance measuring device 6 is disposed. A laser generating component of the laser distance measuring device 6 is opposite to the transmitting channel 61 to transmit measuring beams to an object to be measured, and a laser receiving component of the laser distance measuring device 6 is opposite to the receiving channel 62 to capture the beam reflected from the object to be measured.

As in FIG. 1 , in some embodiments, the multifunctional metal detector further includes a laser projection device 7 integrated in the housing and connected to the control circuit board 2, the laser projection device 7 and the laser distance measuring device 6 are arranged side by side in the width direction of the intermediate frame 12 or in the thickness direction of the intermediate frame 12, and the intermediate frame 12 is provided with a cross-shaped marking channel 71 for a light source of the laser projection device 7 to pass through at a corresponding position, so as to make full use of the arrangement space of the intermediate frame 12 and achieve the marking function.

As in FIG. 1 , in some embodiments, the multifunctional metal detector further includes a lighting device 3 integrated in the housing and connected to the control circuit board 2, the lighting device 3 and the laser distance measuring device 6 are disposed on the same side of the intermediate frame 12, and the intermediate frame 12 is provided with a lighting channel for a light source of the lighting device 3 to pass through at a corresponding position.

It is to be noted that: the “integrated” refers to fix the laser distance measuring device 6, a laser transmission device, and the lighting device 3 in the housing, which cannot be selected to be assembled or disassembled by the user according to the using need.

As in FIG. 1 , in some embodiments, the multifunctional metal detector further includes a test pencil 9 connected to the control circuit board 2, the test pencil 9 is arranged close to the long edge side wall of the intermediate frame 12, and the short edge side wall adjacent to the long edge side wall of the intermediate frame 12 is provided with a first through hole, the first through hole is opposite to the test pencil 9 in position, and the test pencil 9 is slidably disposed in the housing between an extension position for extending out of the first through hole and a hidden position for retracting into the first through hole in a direction parallel to the long edge side wall of the intermediate frame 12.

As in FIG. 2 , further, the test pencil 9 is provided with a toggle switch 91, the toggle switch 91 is arranged in a direction parallel to the short edge side wall of the intermediate frame 12 and extends at least partially out of the surface of the housing, and the user pushes the test pencil 9 to slide between the extension position and retraction positions by means of the toggle switch 91.

As in FIG. 1 and FIG. 4 , in some other embodiments of the present disclosure, the coupling assembly includes a second coupling assembly, the functional device is constructed to be able to be movably switched between a first position, a second position and a third position under the action of the second coupling assembly, and when the functional device is at the first position, the functional device is integrally placed inside housing; when the functional device is located at the second position, the functional device is integrally placed outside the housing; when the functional device is located at the third position, the functional device is placed inversely inside the housing and at least partially extends out of the housing.

Thus, due to the second coupling assembly, the user can couple the functional device according to the actual use need, and at the same time, the functional device can be accommodated in the housing and taken out in use, to avoid the problem that the functional devices is likely to be lost and is damaged easily in a cluttered construction environment.

It is to be noted that: “placed reversely” means that a first end side and a second end side of the functional device are arranged opposite to each other, with the second end side being closer to the edge of the housing than the first end side at the first position and the first end side being closer to the edge of the housing than the second end side at the second position.

As in FIG. 1 and FIG. 4 , in some embodiments of the present disclosure, the functional device includes a first end side and a second end side, for example, the functional device is formed as a rectangular structure, the first end side and the second end side are two end surfaces arranged opposite to each other, the first end side is provided with a conductive terminal, the second end side is provided with an elastic conductive member protruding out of the second end side, for example, it can be a telescopic conductive post, and the conductive terminal is connected to the telescopic conductive post. When the functional device is located at the first position, the conductive terminal is located on the outer side of the housing; when the functional device is located at the third position, the telescopic conductive post on the second end side is located on the outer side of the housing. As a result, the telescopic conductive column can both conduct electricity and achieve self-propulsion of the functional device by means of the telescopic performance, thereby simplifying the structure.

Preferably, to ensure that the functional device is pushed out smoothly, at least two telescopic conductive posts are arranged spaced apart on the second end side, for example, the telescopic conductive post can be formed as a telescopic copper needle 82.

As in FIG. 4 , in some examples, the second coupling assembly includes a support 88 and a control mechanism, the support 88 is disposed in the housing and defines a hidden groove 15, and the functional device is stored in the hidden groove 15 at the first position and at least partially protrudes out of the hidden groove 15 at the third position for functional detection.

The control mechanism is connected to the functional device, and locks the functional device at the first position and the third position, and unlocks the functional device at the second position.

In a further embodiment, the second coupling assembly further includes a coupling interface formed in the control circuit board 2, and the coupling interface is connected to the conductive terminal when the functional device is located at the third position.

As in FIG. 4 , preferably, the support 88 has a second through hole, the functional device has a first clamping groove 871 and a second clamping groove 872 capable of being opposite to the position of the second through hole, the first clamping groove 871 and the second clamping groove 872 are oppositely disposed on two opposite sides of the functional device in the thickness direction, and the control mechanism includes: a lever 81, the lever 81 being hinged to the support 88, one end of the lever 81 forming a key portion 122/85 and the other end of the lever 81 forming a clamping block 86 corresponding to the second through hole in position and shape; and an elastic member, the elastic member being disposed between a push-button switch and a bracket so as to move the lever 81 between a locked position for locking the functional device and an unlocked position for unlocking the functional device; when the lever 81 is located at the locked position, the lever 81 enables the clamping block 86 to pass through the second through hole under the action of the elastic member to normally stop against the first clamping groove 871 or the second clamping groove 872; for example, at the first position, the clamping block 86 stops against the first clamping groove 871 to lock the functional device as a whole in the hidden groove 15; at the third position, the clamping block 86 stops against the second clamping groove 872 to lock the functional device in the hidden groove 15, and the telescopic conductive post extends out of the housing for detection, improving the reliability of fixing the functional device in use; when the lever 81 is located the unlocked position, the functional device is pushed out of the hidden groove 15 under the action of the telescopic conductive post.

Optionally, the functional device is at least one of an ambient temperature detection device, an ambient humidity detection device, a tape measure device, a lighting device, a thermal imaging device 5, a laser distance measuring device 6, a laser marking device, an endoscope device, a thickness measuring device, a temperature detection device, a roller distance measuring device or a brake fluid water content detection device.

As in FIG. 5 , in some embodiments, the wall detection circuit 4 includes at least one transmitting coil 131 and at least one receiving coil system, the receiving coil system is inductively coupled to the transmitting coil 131, the receiving coil system includes at least one first receiving coil 132 and at least one second receiving coil 133 located in the same plane of the control circuit board 2, where the transmitting coil 131 forms a projection in the plane, the first receiving coil 132 contains the projection in a region formed by the plane, the second receiving coil 133 is arranged in an open shape in the region formed by the plane around the projection, and the first receiving coil 132 and the second receiving coil 133 are wound and arranged in the same direction and electrically connected to each other.

Thus, compared to the wall detection circuit 4 of the receiving coil system consisting of two sets of first receiving coil 132 and second receiving coil 133 wound in opposite directions in the related art, the wall detection circuit 4 in the present disclosure allows the induction electromotive force generated by the first magnetic field of the transmitting coil 131 to cancel with each other; for the second magnetic field generated by the transmitting coil 131 for the object to be measured, due to the coils being wound in the same direction, the induction electromotive force generated by them is superimposed on each other, so it will enhance the sensitivity of the receiving coil to the magnetic field induction of the object to be measured, and will not form a blind region for measurement, which greatly improves the accuracy of measurement.

A multifunctional metal detector according to an embodiment in the second aspect of the present disclosure will be described below, including a housing 1 and a control circuit board 2 and a wall detection circuit 4 mounted in the housing 1.

At least one first coupling assembly capable of being connected to the control circuit board 2 is included, and the first coupling assembly is constructed for detachably coupling and connecting at least one functional device to the multifunctional metal detector.

At least one second coupling assembly capable of being connected to the control circuit board 2 is included, the second coupling assembly is disposed in the housing, at least another functional device is constructed to be movably switched between a first position, a second position and a third position under the action of the second coupling assembly, and when the functional device is located at the first position, the functional device is integrally placed inside the housing; when the functional device is located at the second position, the functional device is integrally placed outside the housing; when the functional device is located at the third position, the functional device is placed reversely in the housing and at least a part of the functional device extends out of the housing, where the functional device is used for providing other functions different from metal detection.

Thus, in the multifunctional metal detector according to the embodiment of the present disclosure, by disposing at least one first coupling assembly and at least one second coupling assembly, the first coupling assembly and the second coupling assembly are used so that different functional devices can be respectively connected, which is convenient for the user to select and match the functions according to the actual needs, improves flexibility and convenience, and reduces the overall volume; further through the second coupling assembly, in addition to coupling the functional device, it is also convenient to store and carry the functional device cooperating with it, reducing the risk that the functional device is lost, etc. in the working environment.

Specific embodiments of the multifunctional metal detector according to the present disclosure will be described below in combination with FIG. 1 to FIG. 5 .

This embodiment relates to a multifunctional metal detector, which includes a housing 1 and a control circuit board 2 and a wall detection circuit 4 mounted in the housing 1, and a lighting device 3, a thermal imaging device 5, a laser distance measuring device 6, a laser projection device 7, a humidity measuring device 8 and a test pencil 9 are further mounted in the housing 1. The lighting device 3, the wall detection circuit 4, the thermal imaging device 5, the laser distance measuring device 6, the laser projection device 7, the humidity measuring device 8 and the test pencil 9 are electrically connected to the control circuit board 2 respectively.

In this embodiment, the wall detection circuit 4 can detect the metal, non-metal, wood and other foreign objects in a wall that cannot be seen by the naked eye, to clarify the location of the foreign objects in the wall, and then operation is performed to avoid damaging the structure of the circuit, plate, steel bar and other components in the wall, which, on the one hand, plays a role in protecting these components in the wall, and on the other hand, avoids useless operations on the wall and the damage caused by these operations to the wall, decreasing workload while avoiding affecting the attractiveness of the wall.

In this embodiment, the housing 1 includes an upper housing 11, an intermediate frame 12 and a lower housing 13, the upper housing 11 is integrally formed with the intermediate frame 12, the intermediate frame 12 is connected to the lower housing 13 through a connecting support 14, and the control circuit board 2 is disposed between the intermediate frame 12 and the lower housing 13. The thermal imaging device 5 is mounted on one side of the housing 1, the thermal imaging device 5 is provided with a thermal imaging camera 51 and a visible light camera 52, and through the thermal imaging camera 51 and the visible light camera 52, a heat source can be clearly and quickly captured.

The humidity measuring device 8 includes a push-button switch 81, telescopic copper needles 82, a sliding block 83 and a spring 84; the push-button switch 81, with the intermediate frame 12 as the pivot point, forms a lever support structure, the upper portion passes through the upper housing 11 to form a key portion 85, the lower portion passes through the intermediate frame 12, the intermediate frame 12, below the key portion 85, is provided with a spring groove 19, the lower end of the spring 84 is disposed in the spring groove 19, and the upper end of the spring 84 is in contact with the key portion 85. The lower portion of the push-button switch 81 is provided with a clamping block 86, and the sliding block 83 is disposed in the hidden groove 15 formed in the bottom end of the housing 1, and both upper and lower sides of the sliding block 83 are each provided with a clamping groove 87 cooperating with the clamping block 86, and the number of the disposed telescopic copper needles 82 is two, the ends of which are fixed to the sliding block 83, and the telescopic section of the telescopic copper needle 82 is outside of the sliding block 83. When using the humidity measuring function, the key portion 85 of the push-button switch 81 is pressed, the spring 84 is compressed, the clamping block 86 moves out from the clamping groove 87, and the sliding block 83 is ejected from the hidden groove 15 due to the elastic force of the telescopic copper needle 82, and the sliding block 83 is inserted into the hidden groove 15 by turning around, and is limited and fixed through the clamping block 86 and the clamping groove 87, at this time, the telescopic copper needle 82 protrudes out of the outer side of the hidden groove 15, and it is able to measure the humidity through the telescopic copper needle 82, and at the same time, the rear end of the telescopic copper needle 82 is connected to the control circuit board 2 through the circuit inside the housing 1 to get measurement data.

A display screen mounting base 121 is disposed on the intermediate frame 12, and a display screen 16 is mounted in the display screen mounting base 121, and an outer screen 17 is mounted on the outer side of the display screen 16 for protecting the display screen 16, and the display screen 16 is electrically connected to the control circuit board 2. The control circuit board 2 is provided with a control button 21, and a key portion 122 cooperating with the control button 21 is mounted above the display screen mounting base 121. The key portion 122 is used in combination with the display screen 16 to control the application of the wall detection circuit 4, the thermal imaging device 5, the laser distance measuring device 6 and the laser projection device 7, respectively, and to display the results of the measurement on the display screen 16.

In the embodiment of the present application, the laser distance measuring device 6 uses the distance measuring instrument disclosed in China patent CN104597437A, and the housing 1 is provided with a transmitting channel 61 and a receiving channel 62 for a light source of the laser distance measuring device 6 to pass through. The light source of the laser distance measuring device 6 is able to transmit the light source to the outside through the transmitting channel 61, and the transmitted light source touches a measuring object and then reflects, and then is received through the receiving channel 62, in the process, the laser light round trip time is recorded, so as to measure the distance from one end to the other end of the object or the size of the object.

In the embodiment of the present application, the laser projection device 7 uses a cross-line laser head, and the upper portion of the housing 1 is correspondingly provided with a cross-shaped marking channel 71, and the laser projection device 7 is fixed in the intermediate frame 12 by a fixed base 72. The laser projection device 7 emits two laser lines perpendicular to each other, which are projected on the object to produce horizontal marking lines, one of which is used to mark the horizontal direction, and the other one perpendicular to it is used to mark the vertical direction, so it is easy for the construction personnel to correct the horizontal and vertical straightness when cutting plates and performing wall marking and other operations with straightness requirements. In addition, the front portion of the upper housing 11 opposite to the laser projection device 7 is provided with the cross-shaped marking channel 71, the cross-shaped marking channel 71 is shaped as a cross structure matching the laser light emitted by the cross-line laser head, and the laser light of the cross-line laser head can pass through the cross-shaped marking channel 71, can also block the non-cross-line interference laser light and improves the accuracy of the laser line projection. In some other embodiments, the laser projection device 7 can also be a linear-line laser head for operations with a lower requirement for marking, i.e., it can only emit one horizontal or vertical laser light, which also serves the same purpose.

In the embodiment of the present application, a switch for opening and closing the lighting device 3 is disposed on one side of the housing 1, and a lighting channel 31 is disposed correspondingly on the top of the housing 1. So the measuring instrument can be used in dark or insufficiently bright environments.

In this embodiment, the transmitting channel 61, the receiving channel 62, the marking channel 71 and the lighting channel 31 are all placed on the same end surface of the housing 1. Therefore, in the actual construction process, the construction personnel can use the distance measuring function, object detection function, marking function and lighting function of the present utility model alone or in combination to improve work efficiency, which reduces the trouble of carrying a variety of measuring tools for the construction personnel, as well as effectively solve the problem that the construction personnel need to keep changing various detecting tools when different parameters need to be detected in the process of decoration and construction, so the multifunctional metal detector is high practicable.

In the embodiment of the present application, the test pencil 9 is disposed on the side of the housing 1 on one side of the humidity measuring device 8, and the test pencil 9 is hidden inside the housing 1 through the toggle switch 91, and the test pencil 9 is also electrically connected to the alarming lamp 92. A nut 18 is fixed to the lower housing 13, the nut 18 is embedded in the lower housing 13, and due to connection with the outside through the nut 18, the multifunctional metal detector can be mounted on a tripod for use.

In the embodiment of this application, the control circuit board 2 can use a double-sided circuit board with the model of SX00013 developed by Shenzhen Shenxiang Circuit Board Co., Ltd. and the laser projection device 7 can use the LDB163L type marker projector developed and produced by Beijing Aozhiqiang Electronic Technology Co., Ltd.

In the description of the present disclosure, it should be understood that, orientation or position relationships indicated by terms such as “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” are orientation or position relationships shown based on the accompanying drawings, and are merely used for describing the present disclosure and simplifying the description, rather than indicating or implying that the mentioned apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation to the present disclosure.

In the description of the present disclosure, “first feature” or “second feature” may include one or more such features.

In the description of the present disclosure, “a plurality of” means two or two or more.

In the description of the present disclosure, that a first feature is “above” or “below” a second feature may include that the first feature and the second feature are in direct contact, or the first feature and the second feature are not in direct contact, but in indirect contact through other features between them.

In the description of the present disclosure, that the first feature is “above”, “over”, or “on” the second feature may include that the first feature is directly above and obliquely above the second feature, or may merely indicate that the horizontal position of the first feature is higher than that of the second feature.

Other composition and operation of the multifunctional metal detector according to the embodiment of the present disclosure are known to those of ordinary skills in the field, and here will not be described in detail.

In the description of this specification, the description made with reference to the terms “an embodiment”, “some embodiments”, “schematic embodiment”, “example”, “specific example”, or “some examples” means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Although embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that a variety of variations, modifications, replacements and variants of these embodiments may be made without departing from the principles and purposes of the present disclosure, and the scope of the present disclosure is limited by the claims and their equivalents. 

1. A multifunctional metal detector, comprising a housing and a control circuit board and a wall detection circuit mounted in the housing, comprising: at least one coupling assembly capable of being connected to the control circuit board, the coupling assembly being constructed for detachably coupling and connecting at least one functional device to the multifunctional metal detector, and the functional device being used for proving other functions different from metal detection.
 2. The multifunctional metal detector according to claim 1, wherein the coupling assembly is used for fixing the functional device to the housing and/or used for information transmission between the functional device and the multifunctional metal detector.
 3. The multifunctional metal detector according to claim 2, wherein the coupling assembly comprises a first coupling assembly, the first coupling assembly comprising an insert portion, the insert portion being disposed on one of the multifunctional metal detector and the functional device; and an accommodating portion, the accommodating portion being disposed on the other one of the multifunctional metal detector and the functional device and being capable of accommodating the insert portion; when the insert portion is accommodated by the accommodating portion, the insert portion and the accommodating portion being limited to each other and electrically connected so that the functional device is connected to the multifunctional metal detector.
 4. The multifunctional metal detector according to claim 3, wherein the housing comprises an intermediate frame, and the coupling assembly is disposed on the intermediate frame.
 5. The multifunctional metal detector according to claim 4, further comprising a laser distance measuring device integrated in the housing and connected to the control circuit board, the laser distance measuring device being located on the short edge side of the intermediate frame, and the intermediate frame being provided with a transmitting channel and a receiving channel for a light source of the laser distance measuring device to pass through at corresponding positions.
 6. The multifunctional metal detector according to claim 5, further comprising a laser projection device integrated in the housing and connected to the control circuit board, the laser projection device and the laser distance measuring device being arranged side by side in the width direction of the intermediate frame or in the thickness direction of the intermediate frame, and the intermediate frame being provided with a marking channel for a light source of the laser projection device to pass through at a corresponding position.
 7. The multifunctional metal detector according to claim 5, further comprising a lighting device integrated in the housing and connected to the control circuit board, the lighting device and the laser distance measuring device being disposed on the same side of the intermediate frame, and the intermediate frame being provided with a lighting channel for a light source of the lighting device to pass through at a corresponding position.
 8. The multifunctional metal detector according to claim 5, further comprising a test pencil integrated in the housing and connected to the control circuit board, the intermediate frame being provided with a first through hole at the side corresponding to the test pencil, and the test pencil being slidably disposed in the housing between an extension position for extending out of the first through hole and a hidden position for retracting into the first through hole.
 9. The multifunctional metal detector according to claim 8, wherein the test pencil is provided with a toggle switch, and at least a part of the toggle switch projects out of the surface of the housing so that the test pencil extends or retracts into the housing under the action of the toggle switch.
 10. The multifunctional metal detector according to claim 2, wherein the coupling assembly comprises a second coupling assembly, the functional device is constructed to be movably switched between a first position, a second position and a third position under the action of the second coupling assembly, and when the functional device is located at the first position, the functional device is integrally placed inside the housing; when the functional device is located at the second position, the functional device is integrally placed outside the housing; when the functional device is located at the third position, the functional device is placed inversely in the housing and at least a part of the functional device extends out of the housing.
 11. The multifunctional metal detector according to claim 10, wherein the functional device comprises a first end side and a second end side, the first end side is provided with a conductive terminal, the second end side is provided with an elastic conductive member protruding out of the second end side, the first end side is arranged opposite to the second end side and the conductive terminal is electrically connected to the elastic conductive member; when the functional device is located at the first position, the conductive terminal on the first end side is located on the outer side of the housing; when the functional device is located at the third position, the elastic conductive member on the second end side is located on the outer side of the housing.
 12. The multifunctional metal detector according to claim 10, wherein the second coupling assembly comprises: a support, the support being disposed on the housing, the support defining a hidden groove, wherein the functional device is disposed in the hidden groove at the first position and the third position; and a control mechanism, the control mechanism being connected to the functional device to lock the functional device in the hidden groove at the first position and the third position, and to unlock the functional device at the second position.
 13. The multifunctional metal detector according to claim 12, wherein the second coupling assembly further comprises a coupling interface formed in the control circuit board, and the coupling interface is connected to the conductive terminal when the functional device is located at the third position.
 14. The multifunctional metal detector according to claim 12, wherein the support has a second through hole, the functional device has a first clamping groove and a second clamping groove capable of being opposite to the position of the second through hole, the first clamping groove and the second clamping groove are oppositely disposed on two opposite sides of the functional device, and the control mechanism comprises: a lever, the lever being hinged to the support, one end of the lever forming a key portion and the other end of the lever forming a clamping block corresponding to the second through hole in position and shape; and an elastic member, the elastic member being disposed between a push-button switch and a bracket so as to move the lever between a locked position for locking the functional device and an unlocked position for unlocking the functional device, wherein the elastic conductive member forms a telescopic conductive post; when the lever is located at the locked position, the lever enables the clamping block to pass through the second through hole under the action of the elastic member to normally stop against the first clamping groove or the second clamping groove; when the lever is located at the unlocked position, the functional device is pushed out of the hidden groove under the action of the telescopic conductive post.
 15. The multifunctional metal detector according to claim 1, wherein the functional device is at least one of an ambient temperature detection device, an ambient humidity detection device, a tape measure device, a lighting device, a thermal imaging device, a laser distance measuring device, a laser marking device, an endoscope device, a thickness measuring device, a moisture content detection device, a gas detection device, a roller distance measuring device or a brake fluid water content detection device.
 16. The multifunctional metal detector according to claim 1, wherein the wall detection circuit comprises: at least one transmitting coil; and at least one receiving coil system, the receiving coil system being inductively coupled to the transmitting coil, the receiving coil system comprising at least one first receiving coil and at least one second receiving coil located in the same plane of the control circuit board, wherein the transmitting coil forms a projection in the plane, the first receiving coil contains the projection in a region formed by the plane, the second receiving coil is arranged in an open shape in the region formed by the plane around the projection, and the first receiving coil and the second receiving coil are wound and arranged in the same direction and electrically connected to each other.
 17. A multifunctional metal detector, comprising a housing and a control circuit board and a wall detection circuit mounted in the housing, comprising: at least one first coupling assembly capable of being connected to the control circuit board, the first coupling assembly being constructed for detachably coupling and connecting at least one functional device to the multifunctional metal detector; and at least one second coupling assembly capable of being connected to the control circuit board, the second coupling assembly being disposed in the housing, at least another functional device being constructed to be movably switched between a first position, a second position and a third position under the action of the second coupling assembly, and when the functional device is located at the first position, the functional device being integrally placed inside the housing; when the functional device is located at the second position, the functional device being integrally placed outside the housing; when the functional device is located at the third position, the functional device being placed reversely in the housing and at least a part of the functional device extending out of the housing, wherein the functional device is used for providing other functions different from metal detection.
 18. The multifunctional metal detector according to claim 17, wherein the first coupling assembly comprises: an insert portion, the insert portion being disposed on one of the multifunctional metal detector and the functional device; and an accommodating portion, the accommodating portion being disposed on the other one of the multifunctional metal detector and the functional device and being capable of accommodating the insert portion; when the insert portion is accommodated by the accommodating portion, the insert portion and the accommodating portion being limited to each other and electrically connected so that the functional device is connected to the multifunctional metal detector.
 19. The multifunctional metal detector according to claim 17, wherein the second coupling assembly comprises: a support, the support being disposed on the housing, the support defining a hidden groove, wherein the functional device is disposed in the hidden groove at the first position and the third position; and a control mechanism, the control mechanism being connected to the functional device to lock the functional device in the hidden groove at the first position and the third position, and to unlock the functional device at the second position.
 20. The multifunctional metal detector according to claim 19, wherein the support has a second through hole, the functional device has a first clamping groove and a second clamping groove capable of being opposite to the position of the second through hole, the first clamping groove and the second clamping groove are oppositely disposed on two opposite sides of the functional device, and the control mechanism comprises: a lever, the lever being hinged to the support, one end of the lever forming a key portion and the other end of the lever forming a clamping block corresponding to the second through hole in position and shape; and an elastic member, the elastic member being disposed between a push-button switch and a bracket so as to move the lever between a locked position for locking the functional device and an unlocked position for unlocking the functional device; when the lever is located at the locked position, the lever enables the clamping block to pass through the second through hole under the action of the elastic member to normally stop against the first clamping groove or the second clamping groove; when the lever is located at the unlocked position, the functional device is pushed out of the hidden groove under the action of the telescopic conductive post. 